Gas-stove



(No Model.) 2 Sheets-Sheet 1..

L. KETCHUM.

GAS STOVE. No. 439,729. 9 Patented Nov. 4, 1890.

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L. KETCHUM.

GAS STOVE.

No. 439,729. Patented Nov. 4, 1890.

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LANDON KETOHUM, OF SAUGATUCK, CONNECTICUT.

GAS-STOVE.

SPECIFICATION forming part of Letters Patent No. 439,729, dated November 4, 1890.

Application filed October 29, 1889. Serial No. 328,565. (No model.)

To aZZ whom it may concern:

Be it known that I, LANDON KETCHUM, a citizen of the United States, and a resident of Saugatuck, county of Fairfield, and State of Connecticut, have invented a new and useful Improvement in Gas-Stoves, of which the following is a specification.

' My invention relates to an improvementin gas-stoves, and primarily to that form of gasstoves in which the flame burns horizontally from jets placed at the top of the stove, and in which the heat is thrown out by means of a curved radiating or reflecting plate composed of polished tin placed in front of or under the gas-burner.

My invention consists in a rearrangement of certain well-known and old devices, so that their combination will produce a new effect, a much better result, and greater heat, and

also considerable saving of fuel, without reference to the particular shape of the stove.

In the various forms of stoves which have hitherto been in commercial use the burner has usuallybeen placed within the stove, and a variety of devices has been used for supplying air to the same and for regulating and controlling the amount of air so supplied. In the present form of gas-stoves a horizontal gasburner composed of a pipe or tube provided with suitable jets is employed,which is placed on the outside of the outer shell and directly behind a horizontal opening in the shell. A continuous series of openings is provided in the top of the shell for permitting the escape of the products of combustion, which openings are placed along the front edge of the top plate. The advantages of this form of construction over those heretofore used are, first, the prevention of the carbonization of gas in the gas burner or pipe and the stoppage of the gas-apertures, for the reason that the burner itself is constantly kept cool by reason of the free circulation of air around it, and, second, the horizontal opening in front of which the burner is placed affords an extremely active draft, whereby the rapidity of the circulation of the heated currents in the stove is increased.

The invention will be best understood by reference to the accompanying two sheets of drawings, which show the invention applied to a rectangular stove, and in which- Figure l is a plan view of the stove; Fig. 2, a front view showing the upper portion partly broken away; Fig. 3, a vertical cross-section, and Fig. 4 a rear view.

Similar letters refer to similar parts throughshown in the views and terminates at its upper extremity at the back of the stove a short distance below the top.

J represents the gas-burner, which is composed of an ordinary pipe provided with a series of jets, tips, or openings j in acontinuous row, and is connected with the gas-supply pipe F, in the manner shown in the views, by means of an ordinary coupling. An ordinary stop-cock F is provided for controlling the supply. The gas pipe or burner J is supported in any convenient manner, but preferably by means of the two ears 1' 1' upon the rear wall T of the shell.

H is the horizontal openin g in the rear wall, which extends almost the entire length of the stove, as shown in the views, and which varies in width with the diameter of the gas pipe or burner J. This opening is placed just above the upper edge of the radiatingplate R, as shown in Fig. 3. The opening must be sufficiently wide. to allow an open space varying from one-fourth to one-half inches in width above as well as below the periphery of the burner or pipe J, as shown in the views. The burner is placed in close proximity to the opening II, so that the face containing the jets or tips shall be on or nearly on a line with the surface of the rear wall T The top of the stove is provided with a series of openings 1! t, which run longitudinally along the same in close proximity to the front edge of the top of the stove. The face-plate Grextends downward a considerable distance below the top plate, so as to prevent the heated currents from escaping too rapidly through the open face of the stove, and so as to force the greater portion of them to pass up to the top of the stove and out through the openings 75 t 6.

An inner shell is provided in the interior of the stove with air-spaces o 0 at either end between the end walls of the shell T T and the edges of the reflecting-surface, the inner shell being designated by n a; but, if desired, this construction may be dispensed with and the open spaces 0 0 eliminated and the end walls made solid. If desired, aspace may be left at the top of the reflectingplate R,between it and the walls of the stove, in the manner shown in Letters Patent No. 396,575 and No. 407,933, heretofore granted to me. This arrangement permits a sheet of air to enter the stove with the gases from the burn er from the space behind the reflecting-plate, which under certain conditions may be found desirable.

The direction of the hot and cold air currents, which are generated when the gas is lighted in the stove, is shown by the various arrows in the figures. A current of cold air enters at the lower arrows, (shown in Fig. 3,) traverses the passages 0 0, and approaches the burner at either end and comes in contact with the hot-air current and the flame escaping from the tips or jets of the burners j j at the top of the reflecting-surface R. The cold air enters from the opening II in a thin sheet over and under the burner J and with the flames issuing from the tips or jets. The effect of the openings 25 t is to create a strong horizontal draft under the top of the stove, which is unbroken by any cross-draft, while the radiating-plate R will throw out the heat, as before, and the openings t twill also permit it to escape upward into the room or other space to be heated.

It must be understood that I do not limit myself to the shape or form of the various parts described; but, if necessary, the stove may be made square, round, or oval, or, in fact, of any shape. Any kind of a burner may be used without reference to its form, and the opening may consist of a longitudinal slot, as shown, or a series of separate openings.

I claim as my invention- 1. In a gas'stove, the combination, substantially as hereinbefore set forth, with the rear wall of the stove, said wall being provided with a horizontal opening, of a gas-burner provided with suitable jets placed outside of the stove and opposite said opening, so that the gases from the burner enter the Stove through the opening, and a top plate provided with one or more openings extending substantially across the whole width of said top plate for increasing the draft.

2. In a gas-stove, the combination,substantially as hereinbcfore set forth, of a radiating-plate in the interior of the stove, a rear wall provided with a longitudinal opening in close proximity to the upper edge of said plate, a gas-burner provided with suitable jets placed outside the stove upon its walls and opposite to said opening, and a top plate provided with one or more openings extending substantially across the whole width of said top plate, for the purposes set forth.

3. In a gas-stove, the combination, substantially as hereinbefore set forth, of a radiating-plate in the interior of the stove, a rear wall provided with a longitudinal opening above the upper edge of said plate, a gasburner provided with suitable jets so placed outside of the stove upon its walls that the gases from the same will enter the stove through the openings, and a top plate provided with a series of openings in close proximity to its front edge extending substantially across the whole width of said top plate for creating a draft through the stove.

4. In a gas-stove, the combination, substantially as hereinbefore set forth, of a radiating-plate in the interior of the stove, a rear wall provided with a longitudinal opening above the upper edge of said plate, a gasburner provided with suitable jets placed outside of the stove upon said rear wall and opposite to said opening, a top plate provided with one or more openings extending substantially across the whole width of said top plate, and fines in the end walls of the stove, whereby air is supplied to either end of the opening in the back wall.

In testimony that I claim the foregoing as my invention I have signed my name,in presence of two witnesses, this 28th day of October, 1889.

LAND ON KETCIIUM.

Witnesses:

WILLARD PARKER BUTLER. HENRY II. GRAFF. 

